<template>
    <div class="cmt-container">
        <h3>发表评论</h3>
        <hr>
        <textarea placeholder="请输入要BB的内容(最多吐槽120个字)" maxlength="120" v-model='msg'></textarea>
        <mt-button type="primary" size="large" @click='postCom'>发表评论</mt-button>
        <div class="cmt-list">
            <div class="cmt-item" v-for="(item,i) in comments" :key="item.add_time">
                <div class="cmt-title">
                    第{{i+1}}楼用户：{{item.user_name}} 发表时间：{{item.add_time|dateFormat}}
                </div>
                <div class="cmt-body">
                    {{item.content === 'undefined' ?'此用户很懒，什么都没有留下':item.content}}
                </div>
            </div>
        </div>
        <mt-button type="danger" size="large" plain @click="getMore">加载更多</mt-button>
    </div>
</template>

<script>
import {Toast} from 'mint-ui'
export default {
    data(){
        return {
            pageindex:1,
            comments:[],
            msg:''
        }
    },
    created(){
        this.getComments();
    },
    methods:{
        getComments(){
            this.$http.get('api/getcomments/'+this.id+'?pageindex='+this.pageindex).then(result =>{
                if(result.body.status===0){
                    this.comments = this.comments.concat(result.body.message)
                }else{
                    Toast('获取评论失败')
                }
            })
        },
        getMore(){
            this.pageindex++
            this.getComments()
        },
        postCom(){
            if(this.msg.trim().length===0){
                return  Toast('评论内容不能为空')
            }
            this.$http.post('api/postcomment/'+this.id,{content:this.msg.trim()})
            .then(result=>{
                if(result.body.status===0){
                    var cmt ={
                        user_name:'匿名用户',
                        add_time:new Date(),
                        content:this.msg.trim()
                    };
                    this.comments.unshift(cmt);
                    this.msg=''
                }else{
                    Toast('提交评论失败')
                }
            })
        }

    },
    props:['id']
}
</script>

<style lang="scss" scoped>
.cmt-container{
    h3{font-size:18px;}
    textarea{
        font-size:13px;
        height:85px;
        margin:0px;
    }
    .cmt-list{
        margin:5px 0;
        .cmt-item{
            font-size:13px;
            .cmt-title{
                line-height:30px;
                background-color: #ccc;
            }
            .cmt-body{
                line-height:35px;
                text-indent:2em;
            }
        }
    }
}
</style>